CRT Deflection amplifier power transistors heat sink. These transistors blow very easily, several had been replaced and more were blown when I got the unit. The transistor at top is probably the only original one left.
The transistors are controlled by the A225 deflection amplifier card (148K) . A fan blows directly on this heat sink to keep it cool.
Feel free to contact me, David Gesswein firstname.lastname@example.org with any questions, comments on the web site, or if you have related equipment, documentation, software etc. you are willing to part with. I am interested in anything PDP-8 related, computers, peripherals used with them, DEC or third party, or documentation.
PDP-8 Home Page  PDP-8 Site Map  PDP-8 Site Search